build(deps): bump tonic from 0.11.0 to 0.12.3 (#690)

Bumps [tonic](https://github.com/hyperium/tonic) from 0.11.0 to 0.12.3.
- [Release notes](https://github.com/hyperium/tonic/releases)
- [Changelog](https://github.com/hyperium/tonic/blob/master/CHANGELOG.md)
- [Commits](hyperium/tonic@v0.11.0...v0.12.3)

---
updated-dependencies:
- dependency-name: tonic
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Francesco Vigliaturo <francesco.vigliaturo@sentry.io>

sentry-tower/Cargo.toml

@@ -36,5 +36,5 @@ prost = "0.12.3"
 sentry = { path = "../sentry", default-features = false, features = ["test"] }
 sentry-anyhow = { path = "../sentry-anyhow" }
 tokio = { version = "1", features = ["macros", "rt-multi-thread"] }
-tonic = { version = "0.11", features = ["transport"] }
+tonic = { version = "0.12", features = ["transport"] }
 tower = { version = "0.4", features = ["util", "timeout"] }